Honestly, the only people I've seen call AI a threat to radiologists are non-radiologists (i.e. people who don't practice radiology and don't understand the practice of radiology). I have not heard any radiologists seriously call AI the doom of the field.
I even remember the med student with a fascination with AI planning to go into radiology who posted here a few years ago about how AI could take over substantial swaths of radiology, who then completely changed his tune once he actually started residency and realized that there are severe limitations to what AI can actually accomplish in radiology.